package com.study.webapp.socket.netty.粘包;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelHandlerInvoker;
import io.netty.util.concurrent.EventExecutorGroup;

import java.nio.ByteBuffer;
import java.util.Date;

public class TimeServerHandler extends ChannelHandlerAdapter {

    private int counter;

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        byte[] req = new byte[buf.readableBytes()];
        buf.readBytes(req);
        String body = new String(req,"utf-8")
                .substring(0,req.length - System.getProperty("line.separator").length());
        System.out.println("the time server receive order:"+body+",counter is : " + ++counter);
        String currentTime = "query time order".equalsIgnoreCase(body) ?
                new Date().toString() : "bad body";
        currentTime = currentTime + System.getProperty("line.separator");
        ByteBuf resp = Unpooled.copiedBuffer(currentTime.getBytes());
        ctx.writeAndFlush(resp);
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        ctx.flush();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable caus) {
        ctx.close();
    }
}
